Construction of pumps



Mar. 27, 1923. I

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H. C. CLARK CONSTRUCTION OF PUMPS Filed Oct 15, 1921 Mar. 27, 1923.1,450,135

H. c. CLARK CONSTRUCTION OF PUMPS Filed Oct. 15, 1921 2 sheets-sheet 2Patented Ma. 27, 1923-.

UNITED STATES @FFEQFQ CONSTRUCTION OF PUMPS.

Application filed October 13, 1921.

To all whom it may concern:

Be it known that HUBERT CHARLES CLARK, a subject of the King of GreatBritain, residing at Letchworth, England, has invented certain new anduseful Improvements in the Construction of Pumps, of which the followingis a specification.

This invention relates to high speed plunger pumps and has for itsprincipal objects the following;

First, to so locate the valves and to so form the passages for the fluidthat the water velocity is at all times low and any changes in directionof flow are very easy;

Second, to avoid reversal of flow when the plunger is reversed;

Third, to locate the air vessels as close as a possible to the barrel soas to produce very short water columns between the plunger and therespective air vessels;

Fourth, to produce a pump of the character referred to which may easilybe opened up by breaking only a single main joint without disturbing theplunger and (driving mechanism and wherein, by breaking said singlejoint, both the delivery and suction valves may be exposed forinspection or repair.

Other advantageous features of the invention will appear as thedescription proceeds.

The invention will be clearly understood from the following descriptionaided by the annexed drawings in which Figure 1 is a sectional elevationof the P P- Figure 2 a plan with the top cover removed.

Figure 3 a sectional elevation of one of the valves.

Figure 4 a plan of the valve cap.

According to this invention the pump comprises a base casting 1 which issupported on the foundations in any suitable manner. In the presentinstance the base casting 1 is shown as having extensions 2 on a flange2 formed around its upper edge and resting upon channel iron A, A.

Within the base casting 1 is a barrel 3 having flared ends and whichcarries the suction valves 4 on its lower end these being preferablysecured to a plate 3 bolted to the bottom of the barrel 3 and the barrel3 is provided with a flange 3 at its upper end 3 which flange 3 restsupon the aforesaid flange 2. The flared upper end 3 carries Serial No.507,471.

engage the flanges 2, 3 and 9, so that, by removing the bolts, saidthree castings l, 3 and 8 may be readily separated without disturbingthe plunger and driving mechanism. The casting 8 forms the delivery airvessel and possesses a central cylindrical portion or cylinder 10 whichcontains the plunger 11 and its packing gland 12. i

To form the necessary joint between central portion 10 and the barrel 3the cen tre portion 10 is extended to'form a spigot 1' around the baseof which a semi-,circu la;r, groove is cut. Into this groove is sprungan india rubber or other packing ring 13 which forms the joint. Achamfer is formed in a hole in the top of the barrel 3 of such a depththat the packing ring 13 is necessarily compressed when casting 8 ispulled down by the flange bolts and a tight joint is thus completed. Adelivery outlet 14: is formed in the casting 8, and the casting 8 may betaken off at any point. and in any direction and may or ma not beprovided with an internal or ii ling piece 15 as may be necessary todetermine the capacity of the delivery vessel.

The base casting 1 is provided with a suction inlet 16 which may beplaced in any suitable position and point in any desired direction.

Mounted upon the air vessel casting 8 is a bearing frame 17 in which thecrankshaft 18 is carried in bearings 19 and the crank shaft 18 iscoupled to the plunger 11 by means of a connecting rod 20. A removablecover 21 is provided for the purpose of retaining oil and excluding dustand dirt.

Oil thrown off by the crankshaft collects in the base of the bearingframe 17 and passes by means of holes 22 in the stufling gland 12 to theplunger 11 which it lubricates. Some of this oil passes into the plungerduring the lower portion of the stroke and provides lubrication for thegudgeon pin 23 contained therein.

Inner and outer grooves 24 are provided in the stuffing gland 12 andthese are connected by passages 25. Any water leaking past the packingor surplus oil from the plunger collects in these grooves and isdischarged through a passage 26 formed in the air vessel casting.

The valves 4, 5 may be of any of the spring controlled or gravity nonreturn type, but I prefer the construction illustrated in Figures 3 and4,which consist of a ring valve a which covers a plurality of holes 6formed preferably in a circle in that part with which the ring at isassociated, the ring valve a being held in position by an external ring0 and an internal ring it. The internal ring h has its lower endextending below the lower end of the ring a and is connected to thelatter by webs or division ribs 6, thus forming spaces d for the passageof the liquid. The webs or division ribs 6 extend within and form guidesfor the ring valve 60 and the ring valve a is encircled by a spring fwhich is put in compression between a curled over edge of the ring 0 anda lipped plate 9 which encircles the webs or division ribs 6 presses onthe ring valve a, the ring a being held in position by a screw whichpasses through the ring it and engages that part with which the valve isassociated. By this construction the fluid on lifting the ring valve awill pass on both sides of same.

rel, a pump cylinder carried by said dome, a p

crankshaft supported by the dome, a plunger Working in said cylinder, aplunger rod for said plunger actuated by said crankshaft, the base anddome being provided with air spaces, and a single set of securingdevices connecting the base, barrel and dome.

2. A plunger pump according to claim 1, wherein the air spaces of thebase and dome are annular in form and surround said'barrel and cylinder,respectively.

3. A plunger pump according to claim 1, wherein the barrel has flaredends and the inlet and outlet valves are disposed on said flared endsradially about the vertical axis of said barrel. I

In testimony whereof I have hereunto set my hand in presence of twosubscribing Witnesses. V

HUBERT CHARLES CLARK. Witnesses: f

FRED HU'roHINes,

W. BROWN.

